Allium 2012

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Barstow
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Joined: 2010-08-27

Probably one for the Onion Man: I was asked by someone at the Oslo Botanics if I knew this Allium. He wrote:

"I collected it in mid-Yunnan, China. Not a very good photo, it has stolons, no bulb at all, flat leaves. I have tried to key it out from flora of china without any luck. It was flowering in october when I collected it, so late flowering. By the way, it also have sunken midvein, important character in this species I would guess."

Any ideas?

Stephen Barstow
Malvik, Norway
63.4N
Age: Lower end of the 20-25,000 day range

Mark McD
Title: Moderator
Joined: 2009-12-14

Stephenb wrote:

Probably one for the Onion Man: I was asked by someone at the Oslo Botanics if I knew this Allium. He wrote:

"I collected it in mid-Yunnan, China. Not a very good photo, it has stolons, no bulb at all, flat leaves. I have tried to key it out from flora of china without any luck. It was flowering in october when I collected it, so late flowering. By the way, it also have sunken midvein, important character in this species I would guess."

Any ideas?

My guess is that it is very nice form of Allium mairei, a species with many synonyms such as amabile, yunnanense, and pyrrhorrhizum (among others) testament to its variability.  Flowering time in the wild is given as August-October.

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

Mark McD
Title: Moderator
Joined: 2009-12-14

RickR wrote:

Thanks for the confirmation, Mark, regarding Allium daghestanicum.  It seems to constantly run out of water in that pot, and I guess that is what it likes!

While trying to research the species, I came across this PDF: A molecular phylogeny of wild onions.  It has a useful and easily understood phylogeny chart for the genus on pages 1165-66.
http://www.google.com/url?sa=t&rct=j&q=allium+daghestanicum&source=web&c...

Thanks Rick, I don't yet have that technical paper (I do now), and I try to save as many of these as possible. The linear chart is indeed useful to understand the groups of related species.

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

Barstow
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Joined: 2010-08-27

Thanks, Mark.

Unusual to find Allium cernuum for sale here, but I picked up this nice late flowering floriferous plant at a local garden centre last year!

Stephen Barstow
Malvik, Norway
63.4N
Age: Lower end of the 20-25,000 day range

Mark McD
Title: Moderator
Joined: 2009-12-14

Stephen, you might actually have an Allium stellatum hybrid there, looks similar to a number of Allium stellatum hybrids I have.  It could also be an A. cernuum hybrid, although I would still peg it as an A. stellatum entity.  I find that Allium stellatum will cross with Allium senescens and related species like nutans, resulting in plants with flower heads packed with many more flowers than normal, robust growth with broader foliage, and unusual square (in section) stems, as yours seems to show.

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

bulborum
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Joined: 2011-02-01

here just made one a new flower
but just a single plant
not the row

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Normal Zone <8   -7°C _ -12°C      10 F to +20 F
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Barstow
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Joined: 2010-08-27

Thanks, Mark, interesting - wonder where this plant originated... I still haven't managed to flower stellatum here so I don't have any experience with it (it's either been wrong or has died although I have a couple which should flower next year).  It's not often grown over here and I've never seen it in botanical gardens. I remember you posted a comparison of stellatum and cernuum. Do you know where that was or, if you have time, just note the most important differences? Is stellatum generally later? The scapes are squarish, yes, more so than cernuum.

Stephen Barstow
Malvik, Norway
63.4N
Age: Lower end of the 20-25,000 day range

bulborum
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I have some seeds from the A. cernuum
which I collected at Head-Smashed-In Buffalo Jump
if one is interested PM me

Roland

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Normal Zone <8   -7°C _ -12°C      10 F to +20 F
RGB or RBGG means: Roland and Gemma de Boer

Hoy
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Joined: 2009-12-15

A new onion for me: Allium listera flowers now! (I know you have it Mark!) Sadly the leaves are somewhat damaged - guess by what!

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

Barstow
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Joined: 2010-08-27

...but I don't have it...nudge, nudge... :)

Stephen Barstow
Malvik, Norway
63.4N
Age: Lower end of the 20-25,000 day range

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